I tried about 5-6 different cards, in various speed and GB combinations,and all of them worked nearly flawless. Occasionally I had to reinsert them a second time if the process wasn't smooth enough the first time (when IQ running), but none of them got destroyed or corrupted
But since using Link2SD I found out it's better never to remove the external card, because this will break the link to all apps which have to be reinstalled then